Method parse

nodedb/src/engine/document/predicate.rs:39–42

Parse the raw SQL text of a partial-index predicate. Returns `None` if the text cannot be parsed — callers should treat an unparsable predicate as a bug in the stored catalog entry, not as a pass-through (defaulting to "index everything" would silently over-populate a partial index). The caller is expected to surface a clear error; the DDL path already validates the text at CREATE INDEX time.

(text: &str)

    /// expected to surface a clear error; the DDL path already
    /// validates the text at CREATE INDEX time.
    pub fn parse(text: &str) -> Option<Self> {
        let (expr, _deps) = expr_parse::parse_generated_expr(text).ok()?;
        Some(Self { expr })
    }

    /// Evaluate the predicate against a document value. Returns `true`
    /// only when the expression evaluates to `Bool(true)` — `NULL`,